Display apparatus and vehicle having a projector device

1. A display apparatus, comprising: an image data source for outputting an image signal; a mounting device movably joined onto a vehicle; a casing disposed on the mounting device; a projection device disposed in the casing for receiving the image signal, the projection device converting the image signal into a projection image and projecting the projection image onto a ground in front of the vehicle in a first predetermined distance; and an illumination light source, disposed in the casing and positioned higher than the projection device, for projecting illumination light onto a ground in front of the vehicle in a second predetermined distance, the second predetermined distance being longer than the first predetermined distance; wherein a user can adjust a slanted angle of the mounting device relative to the vehicle so as to adjust the first predetermined distance.

2. The display apparatus of claim 1 , the vehicle comprising a handlebar, wherein the display apparatus further comprises a human-machine operation interface disposed on the handlebar, the human-machine operation interface exchanges signals with the image data source and the projection device, and when the user grips the handlebar by a hand, the user can manipulate the human-machine operation interface just by the thumb of the hand.

3. The display apparatus of claim 1 , wherein the image data source comprises a path guide system and a position information device, the position information device outputs position information according to a current position of the vehicle, the image signal is route indication information, and the path guide system modifies the route indication information according to the position information.

4. The display apparatus of claim 1 , wherein the image data source is a mobile communication device, the image signal is an incoming message, and when the mobile communication device receives an incoming call, the mobile communication device will request the projection device to project the incoming message.

5. The display apparatus of claim 1 , wherein the image data source is a speed information device, the speed information device outputs speed information according to a current speed of the vehicle, the image signal is speed indication information, and the speed information device modifies the speed indication information according to the speed information.

6. The display apparatus of claim 1 , further comprising a tilt angle device for sensing a tilt angle of the projection device relative to a horizontal plane for informing the user of a current tilt angle of the projection device.

7. A vehicle, comprising: an image data source for outputting an image signal; and a projection device for receiving the image signal, the projection device converting the image signal into a projection image and projecting the projection image onto a ground in front of the vehicle in a first predetermined distance; wherein the image signal is route indication information modified according to a current position of the vehicle, the route indication information comprises an indication of turning at an intersection, according to the current position of the vehicle, when the vehicle approaches the intersection, the image data source will request the projection device to project the indication of turning at the intersection, and after the vehicle passed through the intersection, the image data source will shut down the projection device for saving electronic energy.

8. The vehicle of claim 7 , wherein the image data source comprises a path guide system, and the path guide system modifies the route indication information according to the current position of the vehicle.

9. The vehicle of claim 7 , wherein the image data source comprises a path guide system and a position information device, the position information device outputs position information according to the current position of the vehicle, the path guide system modifies the route indication information according to the position information, the route indication information comprises an indication of being arriving at a position, according to the position information, when the vehicle approaches the position, the image data source will request the projection device to project the indication of being arriving at the position, and after the vehicle passed through the position, the image data source will shut down the projection device for saving electronic energy.

10. A vehicle, comprising: an image data source for outputting an image signal; and a projection device for receiving the image signal, the projection device converting the image signal into a projection image and projecting the projection image onto a ground in front of the vehicle in a first predetermined distance; wherein the image signal is an incoming message representing a mobile communication device receiving an incoming call, and the image data source requests the projection device to project the incoming message.

11. The vehicle of claim 10 , wherein the image data source comprises the mobile communication device.

12. A vehicle, comprising: an image data source for outputting an image signal; and a projection device for receiving the image signal, the projection device converting the image signal into a projection image and projecting the projection image onto a ground in front of the vehicle in a first predetermined distance; wherein the projection device further comprises a tilt angle device for sensing a tilt angle of the projection device relative to a horizontal plane for informing the user of a current tilt angle of the projection device; wherein when the tilt angle of the projection device is out of a safe angle range, the tilt angle device keeps the projection device unable to be started.

13. The vehicle of claim 12 , wherein the projection device further comprises a projection adjustment device, and the projection adjustment device is capable of modifying the projection image according to the tilt angle.